OpenBSD is developed entirely by volunteers. The project pays for the development environment and developer events by selling CDs through a collection of stores and by accepting donations from organizations and individuals. These finances ensure that OpenBSD will continue to exist, and will remain free for everyone to use and reuse as they see fit. T-shirts and posters are available as well, but do not fund the project.

I personally urge each & every person who leaves OpenBSD 4.7 installed for any length of time to seriously consider supporting the project either by buying an official CD set or simply by contributing directly to the project. Information on monetary contributions can be found at the following:

It is very easy to fall into the trap of convincing ourselves that "Hey, its an Open Source project. I can use it for free.", but this simply isn't true. Nothing is free. The developers are expending resources, whether it is time, talent, or altruism to continually improve a solid operating system. Hardware needs are also a reality. Paying for the electricity consumed is a reality. The project is small, & big corporations are not underwriting the costs. Who keeps the OpenBSD project going are those who buy the official CD set, posters, & to a lesser degree, t-shirts. Do your part to support good software design. Do your part & support OpenBSD.